Volume 10.2, Issue 20, January 1983, Pages 1-7
M. EL-SHAIEB; M. R. FATH EL-BAB; A.S. SABER
Volume 10.1, Issue 19, June 1982, Pages 35-40
M. R. FATH EL-BAB; N.A. MISK; A. HIFNY; A.M. KASSEM
Volume 9, Issue 17.18, January 1982, Pages 1-5
M. EL-SHAIEB; M. R. FATH EL-BAB; A.S. SABER